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Enders, Craig K.
Behaviour research and therapy, November 2017, 2017-Nov, 2017-11-00, 20171101, Letnik: 98Journal Article
The last 20 years has seen an uptick in research on missing data problems, and most software applications now implement one or more sophisticated missing data handling routines (e.g., multiple imputation or maximum likelihood estimation). Despite their superior statistical properties (e.g., less stringent assumptions, greater accuracy and power), the adoption of these modern analytic approaches is not uniform in psychology and related disciplines. Thus, the primary goal of this manuscript is to describe and illustrate the application of multiple imputation. Although maximum likelihood estimation is perhaps the easiest method to use in practice, psychological data sets often feature complexities that are currently difficult to handle appropriately in the likelihood framework (e.g., mixtures of categorical and continuous variables), but relatively simple to treat with imputation. The paper describes a number of practical issues that clinical researchers are likely to encounter when applying multiple imputation, including mixtures of categorical and continuous variables, item-level missing data in questionnaires, significance testing, interaction effects, and multilevel missing data. Analysis examples illustrate imputation with software packages that are freely available on the internet. •An overview of multiple imputation and its application to clinical and psychological research.•Multiple imputation has a flexible assumption about the cause of missingness, and it provides greater accuracy and power.•Imputation is a straightforward solution for practical problems that may be difficult to deal with in other frameworks.•Multiple imputation is available in statistical software packages, and included analysis examples illustrate its use.
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JCR | SNIP | JCR | SNIP | JCR | SNIP | JCR | SNIP |
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in: SICRIS
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